Shock-absorbing mechanism



Spt, 1.1, 1923 s, B. l-msELTnma4 sHocK ABsoRBING MEcHANIsu Filed Feb.28, 1927 Inventar @15gg/Liam@ Wai/16.5.5 Y

Patented Sept. 11,19278.

AUNITED STATES 1,683,822 PATENT OFFICE; l

srAoY B. I'IASELIINE, OF CHICAGO, ILLINOIS, Assrenon To w. H. MINER,INO., or

CHICAGO, ILLINOIS, A CORPORATION or DELAWARE.`

snoek-ABSORBING MEcHANIsM.

Application led February 28, 1927.` Serial No` 171,417.`

This invention relatesto improvements in shock absorbing mechanisms.

One object of the invention is to provide a tandem springshock absorbingmechanism of simple design comprising a minimum number of partsandproviding an exceedingly rugged construction, presenting a heavy columnload sustaining element limiting the compression of the mechanism.

Another object of the invention is to provide a tandem springr shockabsorbing mechanism, including front and rear main follower casings fortransmitting the actuating pressure to rear and front intermediatefollowers to effect compression in tandem of spring resistance'elements, wherein `the inner ends of the main follower casings areadapted to abut throughout, to present a solid column of great strengthto limit Vmovement of the parts of the mechanism when the same is fullycompressed and transmit the actuating force to the `draft sills,preventing the spring resistance elements from being unduly compressed.`

` A more specific objectofthe invention is y to provide a spring shockabsorbing mechanism of thecharacter indicated, including duplicate frontand'rear main follower casings'; duplicate intermediate followermembers; and tandem arranged spring resistance elements, wherein theintermediate follower members are telescoped within the ,followercasings and the front and rear intermediate followers co-operate withabutments on the rear and front main follower casings respectively tocompress the spring resistance meansin tandem.

` Other objects of the invention will'more fully and clearly appearlfromthe descriptionl and claims hereinafter. following.

ln the drawings, forming a part of this specification, Figure 1 is ahorizontal longitudinal sectional view ofaportion of a railway draftrigging, illustratmgmy improvcments in connectiontherewith.I Figure 2 isavertical transversesectional view corresponding substantially totheline 2-2 of Figure l. Figure Sis a diagonal transverse sectional viewcorresponding substantially to the line 3--3 of Figure 2. And Figure 4is a front end elevational viewnof one of the .intermediate followersemployed inconnection with my improved shock absorbing mechamsm. v v

ln'said drawings, 10-10 indicate channel- -site sides thereof adaptedtenerme shaped center or draft sills ofva railway car underframe, to theinner sides of which are secured front stop lugs 11--11 and rear stoplugs 12 12. The inner end of the drawbar is designated by 13, to whichis operatively connected a yoke14; of well known form'.

The shock absorbing mechanism proper isV disposed within the yoke,- andthe yoke and the parts therewithin are supported by a detahable saddleplate 15 fixed to the draft s1 s. Y

My improved shock absorbing Vmechanism comprises, broadly: Front andrear main follower casings A-A .front and rear intermediate .followersB--B; and tandem arranged spring resistance elements C-C.

- VTheV front and rear main follower casings A are of similar design,each being in the form of ak rectangular hollow-boX-lilre member havinglongitudinally disposed vertical side walls 11i- 16,longitudinally'disposed a transverse outer end wall 18. The end wall l18of the casing is laterallyextended beyond the side walls thereof `asclearly shown in Figures 1 and 2, thereby presenting'a relatively largebearing face adapted to co-operate with the corresponding stop lugs. Thecasing A and the end wall 18 `thereof are reinforced by horizontal ribs19. The endA posed in alignment with those diagonal corners ofthe rearfollowercasing A which do not carrythe stop lugs. i 1 Y The intermediatefollowers B are'of similar designyeach comprising a body portion 21having `longitudinally projecting arms 22- at one side thereof. Thearms` 22 are shoul-` dered,` as indicated at 23 and theouter ends of thesame are'` adapted to bear on "the stop lugs 20 of one of the casings A.Each intermediate followerV B is also cut awaygat two oppositelydiagonal sides as indicated at 24-to provide` clearance for the arms 22ofthe other intermediate follower. Each intermediate follower B is also.provided with continuous iianges 25--25 on diagonally, oppoly nearhorizontal top and bottom walls 17-17, Iand Y on the flanges and thestop shoulders 23 of the arms ofthe other intermediate follow* er B. Thetwo intermediate followers B are interlaced so that one of the sameforms a fr`ont intermediate follower and the other a rear intermediatefollower. The front intermediate follower B has the arms 22 there` ofextending rearwardly and bearing on the stop lugs. :20 of the rearfasing Aand the rear intermediate follower B has the arms 22 thereofextending forwardly and bearing on the stop lugs 20 ofthe front followercasing A, It will be evident that the two intermediate followers B arethus mounted for movement in unison respectively vwith the front andrearcasings A. Each vof the intermediate followers B has a flat outerend face adapted to .bear on the inner end of one of the members of thetandem arranged springs C. The tandem arranged springs C comprise frontand rear units, each including a relatively lightinner coil and aheavier outer coil. `The front springV unit C is interposed between theend wall'lS of the front follower casing A and` the front intermediatespring follower B and the rear spring unit is interposed between therear intermediate follower B and the rear end wall 18 of the rear mainfollower casing A. Both of the spring nunits C are housed entirelywithin the casings A.

As clearly shown in Figure 1, the inner ends of the oasings A are spacedapart a distance equal to the `permissible compression stroke of themechanism so that when the gear is fully compressed, the inner ends ofthe casings will abut along the edges of the top, bottom andside walls,thereby presenting in effect a continuous ycolumn element adapted totansmit the actuating force directly to the stop lugs on the draft sillsand rear casing A toward each other and moving the front intermediatefollower and the front end wall 18 of the front casing A toward eachother, compressing both members of the spring resistance means intandem. The compression stroke will continue either until the actuatingforce is reducd, or movement of the casings A `relatively to each otheris limite'd as hereinbefore described by their inner ends coming intoabutment. 'When lthe actuating pressure is lreduced during release, thespring resistance elements C will effect restoration of all of the partsof the mechanismto the normal position of the parts illustrated inFigure 1.`

While I have herein shown and described what I now consider thepreferred manner of -carrying out the invention, the same is merelyillustrative, and 1 contemplate all changes and.modifications that comewithin the scope of the claims appended hereto.

I claim: y

1. 1n a spring shock absorbing mechanism, the combination with front andrear main follower casings having outer end walls functioning as frontand rear main followers and open inner ends; of front and rearintermediate followers telcscopc'd within and com pletely encircled bysaid casings, said `rcar and front intermediate followers being movablewith the front main follower casing and the rear main follower casingrespectively; and .tandem arranged spring resistance ele- 1nents, one ofthe members of which is intcrposed betweenthe end wall of the yfrontfollower casing andthe front intermediate follower, and theother ofwhich is interposed between the rear intermediate followe and the endwall of the rear main follower casincf.

VIn a spring shock absorbing mechanism, .the combination with front andrear main follower casings having front and rear main follower elementsformed integral therewith, said casings being relatively niiovabletoward and away from eachother and adapted to rsaid rear main and rearintermediate followers.

3. In a tandem spring shock absorbing mechanism, the combination withfront and rear casmgsrclatively movahletoward and away from each other;of front and rear Aspring resistance elements within said cas` ings; andseparate front and, rear intermediate followers operatively associatedwith said rear and front casings respectively and bearing respectivelyon ysaid front and rear springs, said intermediate followers bein gtclescoped within and completely encircled by` `arms spanning the frontintermediate follower and bearing on the front casingg and lfromaiuti-car spline. resistance ,elmenta IUI) l ll) ius Within said frontand rear oasings and boaring respectively on said front and rearintermediate followers.

5. In a tandem shock absorbing mechanism, the combination with front andrear rectangular casings having stop shoulders'at two diagonallyopposite corners thereof; of front and rear intermediate followers, eachhaving arms at two diagonal Corners thereof and having the remainingdiagonal corners out away, the arms of each of said interme diatefollowers spanning the other intermediate follower at said eut awaycorners thereof, the arms of the front intermediate follower bearing onthe stop shoulders of said rear casing and the arms of said rearintermediate follower bearing on the stop shoulders of the front easing;and front and rear resistance means within said front and rear oasingsand bearing on the front and rear intermediate followers respectively.

6. In a tandem shock absorbing mechanism, the combination with front andrear follower casings having outer end walls and side walls and openattheir inner opposed ends, the inner ends being adapted to directlyengage around their entire peripheries at the end of a full compressionstrokeyof separa-te front and rear intermediate followers teleseopedwithin the front and reareasings; means extending between the frontinterme- Vdiate follower to the interior of the rear fole lower easingfor actuating the front intermediate follower in unison with the reareasing; means extending between the rear intermeN diate follower and theinterior of the front easing for actuating the rear intermediatefollower' in unison with the front easing; and cushioning meansinterposed between each intermediate follower and the correspond ingfollower easing within which itis tele scoped. l i e In witness that Iclaim the foregoing I have hereunto subscribed my name this 16th day ofFebruary 1927.

STACY B. HASELTINE.

